Comparison between the microbiological and the ion exchange chromatographic analyses of foods for amino acid content

1971 ◽  
Vol 19 (5) ◽  
pp. 935-936 ◽  
Author(s):  
Harold. Lichtenstein
Keyword(s):  
Amino Acid ◽  
Ion Exchange ◽  
Acid Content ◽  
Amino Acid Content

scholarly journals THE AMINO ACID COMPOSITION OF HYPERTENSIN II AND ITS BIOCHEMICAL RELATIONSHIP TO HYPERTENSIN I

1956 ◽  
Vol 104 (2) ◽  
pp. 183-191 ◽  
Author(s):  
Kenneth E. Lentz ◽  
Leonard T. Skeggs ◽  
Kenneth R. Woods ◽  
Joseph R. Kahn ◽  
Norman P. Shumway
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Ion Exchange ◽  
Amino Acid Composition ◽  
Acid Content ◽  
Amino Acid Content ◽  
Converting Enzyme ◽  
Terminal Sequence ◽  
Carboxyl Terminal ◽  
Hydrolysis Of

Preparations of hypertensin II, obtained from the treatment of hypertensin I by the action of the hypertensin converting enzyme of plasma and purified by countercurrent distribution, were quantitatively analyzed for their amino acid content. Chromatography on ion exchange columns showed the presence of equimolar amounts of aspartic acid, proline, valine, isoleucine, tyrosine, phenylalanine, histidine, and arginine. Hypertensin I was found to contain one mole of leucine and one mole of histidine in addition to the amino acids of hypertensin II. These two amino acids were isolated from the conversion products of hypertensin I and identified as the peptide histidylleucine. Carboxypeptidase digestion of hypertensin I showed the carboxyl terminal sequence of amino acids to be residue-phenylalanyl-histidylleucine. Similar studies of hypertensin II demonstrated residue-phenylalanine. It was concluded that the conversion of hypertensin I by the plasma hypertensin converting enzyme involved hydrolysis of the phenylalanyl-histidine bond to form hypertensin II and histidylleucine. The further removal by carboxypeptidase of phenylalanine from hypertensin II destroyed all of the vasoconstrictor activity.

Study on Glycoprotein in Kiwifruit

2010 ◽  
Vol 152-153 ◽  
pp. 1730-1733
Author(s):  
Li Gen Wu ◽  
An Na Wang ◽  
Lin Lu Jia ◽  
Xiu Ling Li ◽  
Yu Dan Sun ◽  
...  
Keyword(s):  
Amino Acids ◽  
Molecular Weight ◽  
Infrared Spectroscopy ◽  
Amino Acid ◽  
Ion Exchange ◽  
Acid Content ◽  
Amino Acid Content ◽  
Exchange Column ◽  
Characteristic Absorption ◽  
Ion Exchange Column

Two fractions, such as Fr1-3 and Fr2-2, were obtain after separating and purifing crude kiwifruit glycoprotein by using Sepharose Cl-6B gel column and DEAE Sepharose Cl-6B ion exchange column. In the UV and Infrared Spectroscopy of Fr1-3 and Fr2-2, the characteristic absorption peaks of sugar and protein were both found.The molecular weight of Fr1-3 is 30497，the molecular weight of Fr2-2 is 28567. Both of Fr1-3 and Fr2-2 have 17 amino acids, However, the amino acid content of them is different.

scholarly journals The effects of insulin and adrenaline on the amino-acid content of blood

1933 ◽  
Vol 27 (5) ◽  
pp. 1648-1654 ◽  
Author(s):  
James Murray Luck ◽  
Stanley Wallace Morse
Keyword(s):  
Amino Acid ◽  
Acid Content ◽  
Amino Acid Content

Evaluation of seed amino acid content and its correlation network analysis in wild soybean (Glycine soja) germplasm in Japan

2021 ◽  
Vol 19 (1) ◽  
pp. 35-43
Author(s):  
Awatsaya Chotekajorn ◽  
Takuyu Hashiguchi ◽  
Masatsugu Hashiguchi ◽  
Hidenori Tanaka ◽  
Ryo Akashi
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Free Amino Acid ◽  
Acid Content ◽  
Free Amino ◽  
Glycine Soja ◽  
Wild Soybean ◽  
Amino Acid Content ◽  
Soybean Seeds ◽  
Free Amino Acid Content

AbstractWild soybean (Glycine soja) is a valuable genetic resource for soybean improvement. Seed composition profiles provide beneficial information for the effective conservation and utilization of wild soybeans. Therefore, this study aimed to assess the variation in free amino acid abundance in the seeds of wild soybean germplasm collected in Japan. The free amino acid content in the seeds from 316 accessions of wild soybean ranged from 0.965 to 5.987 mg/g seed dry weight (DW), representing a 6.2-fold difference. Three amino acids had the highest coefficient of variation (CV): asparagine (1.15), histidine (0.95) and glutamine (0.94). Arginine (0.775 mg/g DW) was the predominant amino acid in wild soybean seeds, whereas the least abundant seed amino acid was glutamine (0.008 mg/g DW). A correlation network revealed significant positive relationships among most amino acids. Wild soybean seeds from different regions of origin had significantly different levels of several amino acids. In addition, a significant correlation between latitude and longitude of the collection sites and the total free amino acid content of seeds was observed. Our study reports diverse phenotypic data on the free amino acid content in seeds of wild soybean resources collected from throughout Japan. This information will be useful in conservation programmes for Japanese wild soybean and for the selection of accessions with favourable characteristics in future legume crop improvement efforts.

Effect of preliminary and culinary processing on amino acid content and protein quality in frozen French beans

2008 ◽  
Vol 43 (10) ◽  
pp. 1786-1791 ◽  
Author(s):  
Waldemar Kmiecik ◽  
Zofia Lisiewska ◽  
Jacek Słupski ◽  
Piotr Gębczyński
Keyword(s):  
Amino Acid ◽  
Acid Content ◽  
Protein Quality ◽  
Amino Acid Content ◽  
French Beans
Sign in / Sign up

Export Citation Format

Share Document